Broken half shaft also mentioned here:
How to active x6m Launch Control? - XBimmers.com | BMW X6 Forum X5 Forum
Seems to be becoming more common on tuned 335 models as well as they push the envelope ever further.
While I agree with the formula that an aftermarket tune makes it an owner expense, you may get some argument from dealers that abuse caused the failure, even with no tune. Abuse always voids warranty, and it is a subjective determination.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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